src/arch/mips/process.cc

   1 /*
   2  * Copyright (c) 2003-2004 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * Authors: Gabe Black
  29  *          Ali Saidi
  30  */
  31
  32 #include "arch/mips/isa_traits.hh"
  33 #include "arch/mips/process.hh"
  34 #include "arch/mips/linux/process.hh"
  35 #include "base/loader/object_file.hh"
  36 #include "base/misc.hh"
  37 #include "cpu/thread_context.hh"
  38 #include "sim/builder.hh"
  39 #include "sim/system.hh"
  40
  41 using namespace std;
  42 using namespace MipsISA;
  43
  44
  45 MipsLiveProcess *
  46 MipsLiveProcess::create(const std::string &nm, System *system, int stdin_fd,
  47         int stdout_fd, int stderr_fd, std::string executable,
  48         std::vector<std::string> &argv, std::vector<std::string> &envp)
  49 {
  50     MipsLiveProcess *process = NULL;
  51
  52     ObjectFile *objFile = createObjectFile(executable);
  53     if (objFile == NULL) {
  54         fatal("Can't load object file %s", executable);
  55     }
  56
  57
  58     if (objFile->getArch() != ObjectFile::Mips)
  59         fatal("Object file does not match architecture.");
  60     switch (objFile->getOpSys()) {
  61       case ObjectFile::Linux:
  62         process = new MipsLinuxProcess(nm, objFile, system,
  63                                         stdin_fd, stdout_fd, stderr_fd,
  64                                         argv, envp);
  65         break;
  66
  67       default:
  68         fatal("Unknown/unsupported operating system.");
  69     }
  70
  71     if (process == NULL)
  72         fatal("Unknown error creating process object.");
  73     return process;
  74 }
  75
  76 MipsLiveProcess::MipsLiveProcess(const std::string &nm, ObjectFile *objFile,
  77         System *_system, int stdin_fd, int stdout_fd, int stderr_fd,
  78         std::vector<std::string> &argv, std::vector<std::string> &envp)
  79     : LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd,
  80         argv, envp)
  81 {
  82
  83     // XXX all the below need to be updated for SPARC - Ali
  84     brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize();
  85     brk_point = roundUp(brk_point, VMPageSize);
  86
  87     // Set up stack.  On Alpha, stack goes below text section.  This
  88     // code should get moved to some architecture-specific spot.
  89     stack_base = objFile->textBase() - (409600+4096);
  90
  91     // Set up region for mmaps.  Tru64 seems to start just above 0 and
  92     // grow up from there.
  93     mmap_start = mmap_end = 0x10000;
  94
  95     // Set pointer for next thread stack.  Reserve 8M for main stack.
  96     next_thread_stack_base = stack_base - (8 * 1024 * 1024);
  97
  98 }
  99
 100 void
 101 MipsLiveProcess::startup()
 102 {
 103     argsInit(MachineBytes, VMPageSize);
 104 }
 105
 106
 107
 108
 109 BEGIN_DECLARE_SIM_OBJECT_PARAMS(MipsLiveProcess)
 110
 111     VectorParam<string> cmd;
 112     Param<string> executable;
 113     Param<string> input;
 114     Param<string> output;
 115     VectorParam<string> env;
 116     SimObjectParam<System *> system;
 117
 118 END_DECLARE_SIM_OBJECT_PARAMS(MipsLiveProcess)
 119
 120
 121 BEGIN_INIT_SIM_OBJECT_PARAMS(MipsLiveProcess)
 122
 123     INIT_PARAM(cmd, "command line (executable plus arguments)"),
 124     INIT_PARAM(executable, "executable (overrides cmd[0] if set)"),
 125     INIT_PARAM(input, "filename for stdin (dflt: use sim stdin)"),
 126     INIT_PARAM(output, "filename for stdout/stderr (dflt: use sim stdout)"),
 127     INIT_PARAM(env, "environment settings"),
 128     INIT_PARAM(system, "system")
 129
 130 END_INIT_SIM_OBJECT_PARAMS(MipsLiveProcess)
 131
 132
 133 CREATE_SIM_OBJECT(MipsLiveProcess)
 134 {
 135     string in = input;
 136     string out = output;
 137
 138     // initialize file descriptors to default: same as simulator
 139     int stdin_fd, stdout_fd, stderr_fd;
 140
 141     if (in == "stdin" || in == "cin")
 142         stdin_fd = STDIN_FILENO;
 143     else
 144         stdin_fd = Process::openInputFile(input);
 145
 146     if (out == "stdout" || out == "cout")
 147         stdout_fd = STDOUT_FILENO;
 148     else if (out == "stderr" || out == "cerr")
 149         stdout_fd = STDERR_FILENO;
 150     else
 151         stdout_fd = Process::openOutputFile(out);
 152
 153     stderr_fd = (stdout_fd != STDOUT_FILENO) ? stdout_fd : STDERR_FILENO;
 154
 155     return MipsLiveProcess::create(getInstanceName(), system,
 156                                stdin_fd, stdout_fd, stderr_fd,
 157                                (string)executable == "" ? cmd[0] : executable,
 158                                cmd, env);
 159 }
 160
 161
 162 REGISTER_SIM_OBJECT("MipsLiveProcess", MipsLiveProcess)
 163
 164